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When you use Internet Explorer 6 Service Pack 1 (SP1) to connect to a Web site, you may experience either of the following symptoms:
Content (such as images) is not updated, as specified by the Web site.
Internet Explorer unexpectedly quits or you receive the following error message:
Internet Explorer has encountered a problem and needs to close. We are sorry for the inconvenience.
If you want to see the data contained in the error report, click click here at the bottom of the message box. You receive error signature information that may be similar to the following:
This problem may occur if the Web site uses the post-check directive in an HTTP header to perform a lazy update of content on the Web page that you are viewing. For example, this problem may occur if the Web site uses the following custom HTTP header:
If the site administrator removes this custom HTTP header, the problem does not occur.
For an update that resolves this problem, see Microsoft Knowledge Base article 834707.
834707 MS04-038: Cumulative Security Update for Internet Explorer
Date Time Version Size File name -------------------------------------------------------------- 14-Jan-2003 14:13 6.0.2800.1159 585,728 Wininet.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Post-check is a cache-control directive that is included with the HTTP Expires header. Web sites use the HTTP Expires header to control how Internet Explorer caches content on the Web site. Post-check defines a time interval (in seconds) after which an object must be checked for "freshness." This check allows Internet Explorer to display the content from its cache or in the Temporary Internet Files folder, and then update the cached copy of the content in the background (lazy update).